How to Hide or unhide a shared post on Facebook: On Facebook platform, whenever you send a post from your account, either to your timeline or in response to someone else’s post, you can either delete the shared post or hide it from public view or totally from your friends.

The difference in between hiding as well as erasing a Facebook post is, Hiding a post will remove it from your Facebook's Timeline and not from your Facebook's activity log but if you delete a Facebook post, you've completely removed it from your FB Page, including your Facebook Web page's activity log.